Carbureter.



`PATLLHJLD JULY 2, 19o?.

LIL-'858,431

A. 0. BROKE.

'CARBURETER.

APPLICATION FILED MAL-1.0.1906.

:,m'iHUR o. BROOKE, orKANsas-forrv, MIssoUnLnssieNoit Orione-,HALF rro A pensaran Maornnsnyoo.,*or.xANsAsorrY,Mrssonnrgxc nronxfrronor'nrssouni, jjaNn'oNrnAtr yro MATTHEW A. FYKE, orxANsAs orrv-, i\nsson1u. y

u'hmnutt may concern:4 i l ll( tf'linown that l, Ainfrnuii'O. llmnixri, ,a citizen oi l lhe"'llntod States, residingxat Kansas (`ity, in the idolrnly 4olA Jackson and State ol' Missouri, have invented 5 certain new and useful Improvements in A(arlulrcters,

ol' which the lbllowing is a specification.

'cspecially to that class designed for supplying 'the Vand x' v o bj ect is to producca carbureter which operates thro' tlc valve.

i end the y.invention consists in certain-novel l5 am rar features of construction'andorganization as lrereiualter described and claimed and inv order that; it ni'vayfbcflully understood reference is to b'e'had to the acc rn nying drawing,in whiclrp 1 l ,is a scctiontaken on thc lineI-I o Fig.

(il l 2O 3\,-.=of=a carburetor embodying my mvention. Fig; 2, 1s

a section on the line II-Il o f Fig. 1.` Fig. ,3, is any el cvlatin ithfc tain parts shown in section on the dotted Wit dependingtube 2, having avalve seat 3, and a pas A communicating with the tank. At its upper ,epd thetank is provided withrinternal threads 5 engagedby screw capi, containing `a threadedl opening 7 t0 rCieH i grallywith the tank and is bowed outwardly at sides (see Fig.A 3) lor a purpose hereinafter nanred, `thelower andhupper ends of the mixing c ham- Meer beingdthreaded as at 15S-and. 14 respectively. V i 1 cross bar extending across the mixing chamber frein the tank; said cross bar crossing the mixingchamber at its pointofgreatestcross sectional area, and in` ypractice it`is preferred that the mixing chambershall be so proportioned that its intersection by the cross bar shall leave spaces at opposite sides oi the bar which to, gether are substantially equal to the cross sectional area of the mixing chamber at any other point. :The cross bar is provided with a longitudinal passage 16, connnunicating atone end with the passage of the hood 17, which opens at its lower end into and near the bottom of the tank, the opposite end of the passage 16 being closed by a plug 18. Y

19 indicates three threaded passages extending through the lower half of the bar and into passage 16,

Specification of Letters Patent. Applicant fina Marcil io,19o6. serarnaoazss. i

,K ll i'veution relates to gasolene carburetcrs and.

s of explosive mixture to an explosive engine,

rtlynd reliably and supplies gasolene and air; tionate to the reciprocatory movement'oi the d drawings, 1 is a 'loat-valvetank provided e the threaded end 'ola guide plug, through' e i'loat valve `stem 9 extends, said stem also exhrough passage' 4, and having'a valve 10 'at itsA indicates a mixing chamber which is preferably CARBURETER; n

and; 20similar passages extending through; the upper? portion ofth'e bar and 'commu nic-ating also"witlnpassage,y `16, the lowerl ends of passages 20 `being preferably en larged toiorm valve seats 2l.

`2 'indicates a tubular arm communicating with andl l.

extending laterally from the mixing chamber above bar l5, it being noted in this connectionthattheuppcr sur; fceo said bar is concaved so as to` ormpracticallyfa continuation of the lower portion ofthe arm 22, and ren ciprocally mounted in said arm is a preferably hollow throttle valve 23 ofy cylindrical form, thecylindrical` end oi the valve in the form of an lannulrnffilange 24, provided above'and below its center' with recesses 25.

. .n tra' Patented 'Joly 2', '19707.'

. l body portion projecting by preference beyond the frontil i* 26 indicates a valve stem through whiclixthe reciprm` eatery 'adjustment of thcvalvelis effected and A27 is a set screw extending longitudinally ,through u the, throttle "I valve and adapted by impingemorit' :againsty the contiguous side oi the, tank topositively limit the orwardj i movement of the valve, and thus prevent it from everV completely closing ,the passage 20 nearest the"`-tank.

A pull-and-push rod 27 is conncctedtowthe valve;l stem and by preference isadapted to be"operated through the instrumentality `of. a hand` orfoot lever,

not shown, orgthe purpose of adjusting" the valve." The set screw is kprevented from working orwaNlacf- 28, bearing against -the roar' cdentally by the lock nut end of the valve.v v .Y 29 indicates needle `valves mounted in passages 19,

and adapted by engagement with seats`2l, .tocut ofi the lsupply of gasolenethrough passages 20.

` ln practiceassuming that the engine is' operating at low spoed, the valve will be uncovering only the'flront passage 20, that is the passage nearest the tank, and the" needle valve controlling said passage willbe open', it

boing understood of course that the romainingfvalves may also be 'opened because the throttle valve forms an hermetical seal for the upper ends of the passages controlled by said valvesand consequently prevents gaso-` lene from passing up through said passages The suction apparatus, not shown, which communicates with the upper end of the mixing chamber suclrs'the gasolene up through the unobstructed passageforward ofi-the valve, thegasolene thus drawn from the tank being im! t mcdiately replaced because the float drops a proportionate distance and opens valve 10, so as to admit suf-y i cient'gasolene through passage 4 into theta nk to replace the quantity extracted. The suctional action described draws air up through the mixing chamber at opposite sides of the cross bar forward of the valve, which blasts of air under the obstruction of the cross bar and the bowed form of the mixing chamber, rise in up wardly converging plan es so as to pick up and vaporize such gasolene, the intersecting air currents resulting in effecting a more thorourghyand complete andintimate l would. occur if the air currents traveled in parallel When it is desired to'operate the engine at its intermewhen the valve is arrangedto expose ltwo or all ofthe passages 20. v

of the gasolenepassing up through one or m'ore of the pasthe adjustment of valves 29 for the purpose et permitting more or less gaslene topass upthrough the passages 20.

I have produceda carbureter by which a rich explosive mixture can be' produced in charges'o'f the 'volume re- A 'rized gasolene la rich explosive mixture is produced 4 ermost or the two outermost passages 20. f 15 of gasolene. which enters the mixing chamber but also the volume oi'air which passes up through the mixing insure a'n explosive mixture of the-requisitequality,

Amixing chamber, it being well known that the greater the surface of the body of liquid exposed, Athemore bcrfgxuggtubulnr bar extending across* the sumel und closed.

ni: one end and communicating nt'the' other with the oilmixture of the same with ,the vaporized gasolene than planes.. By thus intimately-mixing the aira'nd vapowhich passes under the action of the'suctional appara?I tus, to the explosive chamber ofV the engine,not shown;

diste-speed the valve is adjusted to uncover two of the passages 20, and when it is desired to operate the engine at its highest, speed, the -valve is adjusted to uncover all three of said passages, speed being diminished at any 'time by moving the .valve suilciently to cover the outlhe position of the valve 'not'only controls the volume chdmbe'r," that is to say, the valve exposes a single 20, it is so disposed with respect to the tank that less air ca n pass by to the suctional apparatus than sages 20, such illm of gasolene, as it is so shallow as to be but little more than a lm, offering a comparatively4 large area'of contact to the air drawn up through the rapid evaporation takes place. ihis cup therefore offers a sufficient volume of gasol'ene orevaporation to the variation in the quality being effected oi course by From the above description it will be apparent that quired iorroperati-nglthe engine at low; intermediate, or high speedf-:tis to-b' understoodvthat While I have illustrated and inyf preferred' construction,` the 'same is `susceptib'le'o'l modiicat'ionjn-mirior particularswithout-departing frein-the` principle of construc-l Having tlns described the inveti'n what4 I claim as at one end and com munlcatlngat the other with the oil supply mennsjnnd provided lwith'vertlcnlly allned passages 4 connecting its 'bore with theY mixing chumbe'rfund vulves controlling said' pnssges.'

2. In a carburetor', andibs'upply inenns, n mixing cimm- .herL a tubular bar extending acrossthe seme :md-closed su'pply means and provided with vertically nlined pnssugcs connecting-its b o'rewith the-,mixing `churn'ber, vulves controlling said passages,v nud-nn adjustable valve adapted to lose one or more of the outer passages und permit nir to pass up through the mixing chnmbcr.

3. In n carburetor, un oil-supply mcnns, n mixing cimmber, a tubular bar extending across the same und closed at one endmn'd communicating ut the other with thc oilY supply means and provided with vertically ullncd pussngcs connectlng'its bore with the mixing chamber und having its upper surface concaved, vulves controlling snid pns- 'suges, and a cylindrical throttle valve partitioning thc mixing chamber `above said bnr und fitting snugly on the concaved surface-ot the latter, und provided with rcccsscs in the upper and lower portions ot lts trout end.

4. In n cnrbureter, un oil-supply muns, u mixing chumber, a tubnlurbnr' extending across thc same und closed 'at one end und communicating at the other with the oilsupply means und provided with vertically allucd passages connecting its bore with the mixing chamber nnd lmvlng its upper surface dished, vnlvp controlling suld passages,

n cylindrical throttle vulve partitioning the mixing cimmber above said bnr and iitting snugly on thc'concnved sur face of the latter, Aund provided with recesses in the upper and lower portions of its front end, und mcuns io limit the forward movement of said valve.

5. In u cnrbureter, an oli-supply means, u mixing chnmber, a tubular-bnr extending across the sume und closed at one end und communicating t tbc other wiih the oll supply means and provided with vertically nilncd passages connecting its bore with the mixing clmmbcr und hnvillg its upper surface concnvcd, vulvescontrolling suirl pussages, n cylindrical throttle vulve partitioning thc mixing chamber above said bnr und iitting snugly on the concuvcd surface of the lutter und provided with recesses in ihc upper 'and lower portions of its front end, :ind :i set screw carried by the vulve und adapted to limit ihc forwurd movement of the sume.

l(i. A carbureter, comprising a fuel tank, n mixing chamber having a tubularicross bnr closed at one end and communicating with the tunk at the other, und provided with vulve-controlled passages connecting its boi-c with the mixing chamber, n 'vulve controlling the supply oi gasolene to the tnnk, a iloat in snld tank to sont und uhseut sold vulve, und a throttle valve partitioning the mixing chambcr n'bove said bur undl iitti'ng'snugly on the concnvcd surface oi the lutter, und provided with recesses in the upper und lower portions .of its front end.

7. In la cnrbureter, un oilsupply means, a mixing cimmber having opposltewulls converging upwardly, und il cross bur between said wnlls utl the points oi grcntcst divergence und provided with n bore commnnicniing with 'the oil-supply mchnsfnnd with passagesl extending upward from vsaid bore und.communlcnting at their uppcr ends with the mixing chamber, und valves controllingr suid pussages, Y

`.8. in s. curbureter, the combination ct n gasolcnc tnnk. n mixing chamber, a tubular cross bnr in thc mixing ch unber, commi'inlcutlhg withthe tank und. huving its upper side dished, and provided with u plurnlity of passages .vconnectlng'its bore with said dishcd surface. und ,menus torvprevonting thel level of the contents of the innk from rising above the plane of snid dished tace of the cross A9. In a carburetor, nn oil-supply means, irmixing clmmber to admit nil' ut one end und disclnlrgc hn explosive I mixture at thc other, a tubular bur within said chumbcr, -communicuting with the oil-supply mcuns und provided with oil-discharging pnssnges communicating .with vthe chamber, vulves controlling said passages, und :in ad'- 'l justnble throttle valve for always exposing one' or more of the passages und preventing thc .cscupc of. uil through the'pnssngc ornpnssngcs covered und i'or partitioning more' or less-ot the mixing chnmbcr accordingly .as it 'closes u greater or less number of suid passages.

In tcstimony whereof I uillx my signature, lin the prcsence ot two witnesses. t

' 4 ARTHUR 0. BROOKE.

Witnesses 

